1. on the spur of the moment - Adverb
2. on the spur of the moment - Phrase
on impulse; without premeditation
Source: WordNetTake care never to speak what you have not weighed and pondered beforehand; nor interject your own words on the spur of the moment and in the midst of another's; for you must listen and converse in turn, with set times for speech and for silence. Clement of Alexandria
I often arrive at quite sensible ideas and judgements, on the spur of the moment. It is when I stop to think that I become foolish. Jerome K. Jerome
When you make a decision, you need facts. If those facts are in your brain, they're at your fingertips. If they're all in Google somewhere, you may not make the right decision on the spur of the moment. Ken Jennings
We have been given an assignment as a monarchy, and we do as well as we can ... We try to be as little populistic as possible. We don't do anything on the spur of the moment to win an opinion poll, or short-term popularity. Harald V of Norway
People say the most stupid things on the spur of the moment that they then have to retract. Michael Palin
My husband and I have enjoyed many summer holidays on the Continent, and many people say that their most memorable trips have been the journeys made on the spur of the moment. Margaret Beckett